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error[E0792]: non-defining opaque type use in defining scope
--> $DIR/issue-53092-2.rs:6:18
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LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^ argument `u8` is not a generic parameter
|
note: for this opaque type
--> $DIR/issue-53092-2.rs:4:18
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LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
error[E0391]: cycle detected when type-checking `CONST_BUG`
--> $DIR/issue-53092-2.rs:6:1
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LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: ...which requires computing layout of `Bug<u8, ()>`...
= note: ...which requires normalizing `Bug<u8, ()>`...
note: ...which requires computing type of `Bug::{opaque#0}`...
--> $DIR/issue-53092-2.rs:4:18
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LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires computing type of opaque `Bug::{opaque#0}`...
--> $DIR/issue-53092-2.rs:4:18
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LL | type Bug<T, U> = impl Fn(T) -> U + Copy;
| ^^^^^^^^^^^^^^^^^^^^^^
= note: ...which again requires type-checking `CONST_BUG`, completing the cycle
note: cycle used when checking that `CONST_BUG` is well-formed
--> $DIR/issue-53092-2.rs:6:1
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LL | const CONST_BUG: Bug<u8, ()> = unsafe { std::mem::transmute(|_: u8| ()) };
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0391, E0792.
For more information about an error, try `rustc --explain E0391`.
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